| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.pig.newplan.logical.relational; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.apache.pig.impl.util.Pair; |
| import org.apache.pig.newplan.Operator; |
| import org.apache.pig.newplan.PlanVisitor; |
| import org.apache.pig.newplan.logical.expression.LogicalExpression; |
| import org.apache.pig.newplan.logical.expression.LogicalExpressionPlan; |
| import org.apache.pig.newplan.logical.relational.LogicalSchema.LogicalFieldSchema; |
| |
| public class LOSplitOutput extends LogicalRelationalOperator { |
| private LogicalExpressionPlan filterPlan; |
| private Map<Long, Long> uidMapping = new HashMap<Long, Long>(); |
| public LOSplitOutput(LogicalPlan plan) { |
| super("LOSplitOutput", plan); |
| } |
| |
| public LOSplitOutput(LogicalPlan plan, LogicalExpressionPlan filterPlan) { |
| super("LOSplitOutput", plan); |
| this.filterPlan = filterPlan; |
| } |
| |
| public LogicalExpressionPlan getFilterPlan() { |
| return filterPlan; |
| } |
| |
| public void setFilterPlan(LogicalExpressionPlan filterPlan) { |
| this.filterPlan = filterPlan; |
| } |
| |
| @Override |
| public LogicalSchema getSchema() throws FrontendException { |
| if (schema!=null) |
| return schema; |
| |
| LogicalRelationalOperator input = null; |
| input = (LogicalRelationalOperator)plan.getPredecessors(this).get(0); |
| |
| if (input.getSchema()!=null) { |
| schema = input.getSchema().deepCopy(); |
| for (LogicalFieldSchema fs : schema.getFields()) { |
| if (uidMapping.containsKey(fs.uid)) { |
| fs.uid = uidMapping.get(fs.uid); |
| } |
| else { |
| long predUid = fs.uid; |
| fs.uid = LogicalExpression.getNextUid(); |
| uidMapping.put(predUid, fs.uid); |
| } |
| } |
| } |
| return schema; |
| } |
| |
| @Override |
| public void accept(PlanVisitor v) throws FrontendException { |
| if (!(v instanceof LogicalRelationalNodesVisitor)) { |
| throw new FrontendException("Expected LogicalPlanVisitor", 2223); |
| } |
| ((LogicalRelationalNodesVisitor)v).visit(this); |
| } |
| |
| @Override |
| public boolean isEqual(Operator other) throws FrontendException { |
| if (other != null && other instanceof LOSplitOutput) { |
| LOSplitOutput os = (LOSplitOutput)other; |
| return filterPlan.isEqual(os.filterPlan) && checkEquality(os); |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public void resetUid() { |
| uidMapping = new HashMap<Long, Long>(); |
| } |
| |
| public long getInputUids(long uid) { |
| for (Map.Entry<Long, Long> pair : uidMapping.entrySet()) { |
| if (pair.getValue()==uid) |
| return pair.getKey(); |
| } |
| return -1; |
| } |
| } |